Signal Characteristics of Acoustic Emission from Welded Exhaust Flange for Fatigue Fracture Prediction

배기계 플랜지 용접부 피로파괴 예측을 위한 음향방출 신호 특성

The purpose of this work is to obtain fundamental data about fatigue crack detection of the welded exhaust flange by using the AE method. The acoustic emission method as a nondestructive evaluation is one of high technical test for realtime monitoring in the dangerous industry fields. Signal analysis of both AE sensor and accelerometer for fatigue crack failure are presented in this paper.